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pthread_md.h revision 1.6 
      1 /*	$NetBSD: pthread_md.h,v 1.6 2008/04/28 20:23:02 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Nathan J. Williams.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _LIB_PTHREAD_HPPA_MD_H
     33 #define _LIB_PTHREAD_HPPA_MD_H
     34 
     35 #include <machine/frame.h>
     36 
     37 #define	PTHREAD__ASM_RASOPS
     38 
     39 static inline long
     40 pthread__sp(void)
     41 {
     42 	register long sp __asm("r30");
     43 
     44 	return sp;
     45 }
     46 
     47 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
     48 #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PCOQH])
     49 
     50 /*
     51  * Set initial, sane values for registers whose values aren't just
     52  * "don't care".
     53  */
     54 #define _INITCONTEXT_U_MD(ucp)						\
     55 	(ucp)->uc_mcontext.__gregs[_REG_PSW] = 0x4000f;
     56 
     57 /*
     58  * Usable stack space below the ucontext_t.
     59  */
     60 #define STACKSPACE	(HPPA_FRAME_SIZE)
     61 
     62 /*
     63  * Conversions between struct reg and struct mcontext. Used by
     64  * libpthread_dbg.
     65  */
     66 #include <hppa/reg.h>
     67 
     68 #define PTHREAD_UCONTEXT_TO_REG(reg, uc)				\
     69 do {									\
     70 	memcpy(&(reg)->r_regs, &(uc)->uc_mcontext.__gregs,		\
     71 	    sizeof(__greg_t) * 32);					\
     72 } while (/*CONSTCOND*/0)
     73 
     74 #define PTHREAD_REG_TO_UCONTEXT(uc, reg)				\
     75 do {									\
     76 	memcpy(&(uc)->uc_mcontext.__gregs, &(reg)->r_regs,		\
     77 	    sizeof(__greg_t) * 32);					\
     78 	(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER;       	\
     79 } while (/*CONSTCOND*/0)
     80 
     81 #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc)       			\
     82 do {									\
     83 	memcpy((freg), &(uc)->uc_mcontext.__fpregs,			\
     84 	    sizeof(struct fpreg));					\
     85 } while (/*CONSTCOND*/0)
     86 
     87 #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg)				\
     88 do {						       	       		\
     89 	memcpy(&(uc)->uc_mcontext.__fpregs, (freg),			\
     90 	    sizeof(struct fpreg));					\
     91 	(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER;       	\
     92 } while (/*CONSTCOND*/0)
     93 
     94 /* Don't need additional memory barriers. */
     95 #define	PTHREAD__ATOMIC_IS_MEMBAR
     96 
     97 #endif /* !_LIB_PTHREAD_HPPA_MD_H */
     98